Added support to define differnet not-found redirects per domain

module/Core/src/Config/NotFoundRedirectConfigInterface.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Config;
+
+interface NotFoundRedirectConfigInterface
+{
+    public function invalidShortUrlRedirect(): ?string;
+
+    public function hasInvalidShortUrlRedirect(): bool;
+
+    public function regular404Redirect(): ?string;
+
+    public function hasRegular404Redirect(): bool;
+
+    public function baseUrlRedirect(): ?string;
+
+    public function hasBaseUrlRedirect(): bool;
+}

module/Core/src/Config/NotFoundRedirectResolver.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Config;
+
+use Psr\Http\Message\ResponseInterface;
+use Shlinkio\Shlink\Core\ErrorHandler\Model\NotFoundType;
+use Shlinkio\Shlink\Core\Util\RedirectResponseHelperInterface;
+
+class NotFoundRedirectResolver implements NotFoundRedirectResolverInterface
+{
+    public function __construct(private RedirectResponseHelperInterface $redirectResponseHelper)
+    {
+    }
+
+    public function resolveRedirectResponse(
+        NotFoundType $notFoundType,
+        NotFoundRedirectConfigInterface $config
+    ): ?ResponseInterface {
+        return match (true) {
+            $notFoundType->isBaseUrl() && $config->hasBaseUrlRedirect() =>
+                // @phpstan-ignore-next-line Create custom PHPStan rule
+                $this->redirectResponseHelper->buildRedirectResponse($config->baseUrlRedirect()),
+            $notFoundType->isRegularNotFound() && $config->hasRegular404Redirect() =>
+                // @phpstan-ignore-next-line Create custom PHPStan rule
+                $this->redirectResponseHelper->buildRedirectResponse($config->regular404Redirect()),
+            $notFoundType->isInvalidShortUrl() && $config->hasInvalidShortUrlRedirect() =>
+                // @phpstan-ignore-next-line Create custom PHPStan rule
+                $this->redirectResponseHelper->buildRedirectResponse($config->invalidShortUrlRedirect()),
+            default => null,
+        };
+    }
+}

module/Core/src/Config/NotFoundRedirectResolverInterface.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Config;
+
+use Psr\Http\Message\ResponseInterface;
+use Shlinkio\Shlink\Core\ErrorHandler\Model\NotFoundType;
+
+interface NotFoundRedirectResolverInterface
+{
+    public function resolveRedirectResponse(
+        NotFoundType $notFoundType,
+        NotFoundRedirectConfigInterface $config
+    ): ?ResponseInterface;
+}